My quick question is, where is she Aria T'loak? If I'm not mistaken, she's suppose to be in the club at the number 3 location (on the map), but I don't see her.
She's listed at the number 2 location, and will always be there. She's sitting on the corner couch.
After entering the club, go up the first set of stairs and take a right, she will be sitting on the red couch.
In the Purgatory at the VIP lounge